Toll telephone system.



PATENTED APR. 28, 1908.

E. P. BAIRD. TOLL TELEPHONE sYsTEM. APPLICATION FILED JAN. 27, 1902. RENEWED MAR. 19, 1906.

4 SHEETSSHEET 1.

Jillian/fir; 511M111 mild/ 4 No. 886.031. PATENTED APR. 28, 1908. E. P. BAIRD.

TOLL TELEPHONE SYSTEM. APPLIOATION FILED JAN. 27, 1902. RENEWED MAB. 19,1906.

4 SHEETS-SHEET 2.

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4 ljdwanl flamt M W- J 17 1 deflatio J x 55- No. 886,031. PATENTED APR. 28, 1908. E. P. BAIRD.

TOLL TELEPHONE SYSTEM. APPLICATION FILED JAN. 27, 1902. RENEWED MAR. 19, 1906.

4-SHEETSSHEET s.

No. 886,031. PATENTED APR. 28, 1908.

E. P. BAIRD.

TOLL TELEPHONE SYSTEM.

APPLICATION TILED JAN. 27, 1902. RENEWED MAR. 19, 1906.

4 SHEETS-SHEET 4.

fl I00 lowin UNITED STATES PATENT OFFICE.

EDWARD P. BAIRD, OF EVANSTON, ILLINOIS, ASSIGNOR TOBAIRD MANUFACTURING GOM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

TOLL TE LEPHONE SYSTEM.

T 0 all whom it may concern:

Be it known that I, EDWARD P.-BAIRD, a resident of the city of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Toll Tele hone Systems, of which the following'is a ll, clear, and exact description.

The invention relates more particularly to apparatus for collecting toll, and to telep one-lines associated therewith.

The invention designs to provide the folviz: an improved toll-receiving apparatus; an improved apparatus which requires the de osit of a coin to cause the actuation of theline-signal at central ofiice, and which permits refund of a coin in event the desired service cannot be given; a tolla paratus in which the coin distributer-mec anism can be manually actuated to refund a coin, and. including means whereby the refunding mechanism can be secured against nanual operation; a toll telephone system in which the. coin distributor-mechanism of the toll-apparatus is actuated by the depositor, and in which the central operator can secure the refunding mechanism against manual operation to refund a coin; a toll-receiving apparatus, in which the 'distributer-mechanism is manually actuated to displace a coin into the coin-receptacle, during the deposit of a coin, with coin-refunding lneans operable by the depositor; atoll-apparatus whichreimproved toll-telephone system which requires the deposit of a coin to cause the actuation of the ne-signal at central-office, and which includes coin refunding ,means, the manual actuation whereof, is under control of the centra'leoperator, and whereby the coin can be withdrawn by the depositor, if the telephone-line is inoperative; an improved toll-apparatus in which a polarized or selectivc relay is employed to control the operaion of the distributer-mechanism, and in which means are provided for preventing alternating current which actuates the callsignal at the substation, from actuating the polarized relay; improvedmeans for holding the coin-controlled switch which controls the passage of current over a signal circuit, in

Specification of Letters Patent.

Application filed January 27, 1902, Serial No. 91,345.

Patented April 28, 1908.

Renewed March 19, 1906. Serial No. 306,908.

shifted position; improved mechanism for controlling the actuation of a manuallyactuated coindistributor-mechanism; .and a tolltelephone system which is simple in construction and efficient in operation.

The invention consists in the several navel features hereinafter described, and 'more particularly defined by claims at the conclusion hereof. I r v In the drawings: Figure 1 is a diagrammatic view of a telephoneline associated with the improved toll-apparatus; Fig. 2 isa view in central vertical longitudinal section of a toll-apparatus, embodying the preferred.

form of the invention; Fig. 3 is a view in side.

elevation, ,the inclosing case being shown section; 4 is a plan view, the inclosing casing being shown insection; 5 is a detail view inside elevation of the frame and parts secured thereto, and parts being shown in normal position; Fig. 6 is adetailview showing some of the parts shown in Fig. 5, in I shifted position; Fig. 7 is a detail view of the locking-dog, and the lever whereby the distributer-mechanism is operated to refund a coin; Fig. 8 is a view of the toll-apparatus in horizontal section taken on line 88 of Fig.

15; Fig. is a sectional view taken on line A case 15 having an open back, and containing the several parts of the toll apparatus is usually secured to :the back-board of athe coins or toll-representing checks, re-

ceived in payment for telephone service.

.A door 17 secured in the case by a lock 18, affords access to compartment 16, so coins or checks can be withdrawn. A support or frame comprising side-walls 20.;and 21, and secured to horizontal wall 19, sustains the operating-mechanism of the toll-apparatus.

A coin-receiving slot 22 is formed in the top-wall 23 .of the case. A "manuallyactuated coin-carrier 14 is pivotally sustained by rod 24 sustained in walls 20, 21, of the frame. Coin-carrier 14 is normally inclined, provided'with a coin-channel or guide 13 extending entirel therethrough, and with a lever 25 exten ed through slot 26 in the case. A stop 2 7 located in the coinchannel 13, holds a coin of proper size in the carrier, while a coin of smaller size will pass therethrough, and thence into coin compartment 16. A notch 28 formed in the carrier, and adjacent the front or upper edge thereof, exposes a portion of a coin, for engagement with mechanism hereinafter described, during the shift of the coin-carrier. The free terminal of lever 25 is located outsidev of the case, so the depositor can actuate the carrier manually. Lever 25 is provided with wing 29, which obstructs lever-slot 26 and prevents the insertion of articles therethrough, and also obstructs the receiving-- slot except when the carrier is in normal position. Coins are positively shifted by the carrier to effect positive shift of the coinactuated or controlled parts of the toll-apparatus. A spring 30 imparts reverse movement to the coin-carrier, and retains the carrier normally in position to receive a coin inserted through receiving-slot 22. A dog31 pivotally sustained by cross-rod 32 journaled in frame 20, 21, is provided with a series of teeth, and is pressed normally into position shownin Fig. 2, and into the path of travel of a coin in carrier 14, by a spring 32'. The teeth of dog 31 are successively engaged by the coin during' the descent of the carrier, and prevent retraction of the carrier, until carrier and coin have passed below the dog and the .coin has been discharged. Spring 32 engages dog 31 and holds an extension 33 of dog 31 against stop 34 secured to wall 20. A coin discharged from the carrier will gravitate into a distributermechanism, being directed thereto, by a guide'or wall 35.

The apparatus is designed to require the deposit of a coin before the line signal at central station is actuated, and to refund the coin, if the desired service cannot be given. A-coin-distributing mechanism is provided, whereby a coin will be temporarily retained, and whereby the coin will be displaced into compartment 16, or refunded to the depositor'. The coin distributermechanism (see Fig. 2) comprises a chute 50 pivotally sustained at 51 in the side-walls of the frame, and a=coin-rest 52 positioned normally beneath the chute, and' sustained by arms 53 pivotally sustained at 54. Passage 55 at the rear of rest 52 directs a coin intocoincompartment 16, when chute 50 is shifted to displace the coin. If desired, an opening and translucent plate 12 may be provided to display a coin held in chute 50,. so a bogus coin can be detected.

Guide 56 beneath movable rest 52 directs a coin from chute 50, (when rest 52 is.

ter-inechanism, the previously deposited coin will be displaced into coin-compartment 16. The mechanism for shifting the coin chute to displace acoin into coin-compartment 16, comprises-a bell-crank lever 60 pivotally sustained by cross-shaft 37, and hav- 8Q ing an arm 61 extending normally into the path of movement of a coin in the carrier, and an arm 62, engaging a slightly flexible extension or strip 63 secured to distributerchute 50. Arm 61 is engaged by a coin during the initial part of the downward shift of coin and carrier.

The operation of the mechanism for displacing coins into the coin-compartment, will be as follows: A coin held in the carrier; will, during the initial part of the shift thereof, engage arm 61, shift bell-crank lever 60, and swing the chute rearwardly against the force of spring 59, and into ositlon to remove the previously deposite coin (if any), 5 from. rest 52, and into guide or passage 55, and thence into the coin-compartment. As the coin in-thecarrier engages arm 61 only during the initial part of the downward" movement of .the carrier, arm 61 will be released and spring 59 will restore distributerchute'50 to normal position before the coin is dischar edfrom the carrier. During each de 'osit o a coin, and its transit to the distri uter-mechanism, the distributer-mechanism will be operated to displace a previously deposited coin, (if any), auto the'coincompartment, and the distributor-chute will be restored to normal position.- in readiness to receive the last deposited coin. A coin inserted by a depositor desiring service will be retained in the distributor-chute: If the desired telephonic connection can be obtained,'the coin remains in the distributerchute until displaced into the coin compart- 115 ment by the succeeding operation of the carrier.

A shifter-arm 36 projecting {normally into the path of travel of a coin in the carrier,

is secured to a cross-shaft 37 'ournaled in 120 connection is desired, and the switch-arm will retain the circuit closed, until the switcharm is released.

and holds the striker and switch-arm in shifted position. A fixed stop 48 (see Fig. 5) restricts the downward movement of latch 44 and a slot 49 insures the descent of latch 44 and the engagement of hook 46 and stud 47 during the shift of the striker. Stud 47 travels forwardly of hook 46 and passes into slot 49. Spring contact 40 exerts an upward pressure against the switch-arm, and holds the switch-arm and striker normally in position shown in Fig. 5. When shifted by the deposit of a coin, the striker will be held (by latch 44) in position to actuate the soundproducing body 42, when the striker is reeased.

Switch-arm 38 being secured to shaft 37 will be held in position to close the signalcircuit, while the striker-lever is held by latch 44. The audible signal produced by striker 38 and gong 42 confirms the actuation of the line-signal at central station, and

notifies the central operator that the signalcircuit has not been closed' by fraudulent means. The actuation of the device for producing an audible signal is deferred until the central operator has connected the operators circuit with the substation so the line-signal at central station will remain actuated for the same period. Latch 44 retains switcharm 38 and striker 39 in shifted position,

until the coin is withdrawn by the depositor.

The present invention designs inter alia to provide an improved apparatus which requires the deposit ofa coin to cause the actuation of thelinesignal(or other device whereby the central office is called) at central office and which will permit the deposited coin to remain in control of the depositor until the central operator responds to the call. For

example, if the telephone line is out of order.

so communication cannot be had with the central office, the deposited coin can be withdrawn. The operation and construction of the coin distributer mechanism are such, that-a coin deposited to establish communication with central office, and cause the actuation of the line-signal, can be withdrawn by the depositor until the central operator operates the releasing mechanism and locks the coin refunding means. The mechanism for locking the refunding means is under control of the central operator, so the lockingmechanism can he. released to permit the deposited coin to be manually withdrawn if the desired telephonic connection cannot be established.

The coin refunding means is operable by the depositor, and comprises a rod 64 1nounted in manner free to slide in guide-lugs 65, 66, of the frame, a handle 67 secured to the front terminal of rod 64, and whereby the rod may be shiftedand alever 68 pivotally secured to the frame at 71, and having its lower end connected by a stud and slot70 to one of the arms 53 of the movable coinrest 52, of the distributer mechanism. A locking-dog 72'is pivotally sustained in the frame asat 73, and thereby the operatinglever 66 of the movable coin-rest is secured against shift in that direction in whichfthe withdrawal of the coin is effected. A spring 74 holds rod 64-normally in position seen in Fig. 5, and restores the rod to normal position after shift in forward direction. Rod 64 is secured against rotation, and reciprocatory play thereof is limited by a stud 75, secured to said rod, and extended into a slot 76 in side-wall 20 of the frame, and into a slot 77 formed in a plate or supplemental frame-side 78 secured to lugs and 66 of the frame. The inwardly projecting portion of stud 75 is positioned to engage the upper terminal of lever 68, and shift said lever and the movable coin-rest. The outwardly projecting portion of stud 75 is arranged to engage an arm or extension 89 on latch 44 and lift the latch .to release the striker and switch-arm when rod 64 is shifted to refund a coin, while striker 39-and switcharm 38 are in shifted position. Spring 69 holds lever 68, and coin-rest 52 in normal position seen in Fig. 5. An arm 87 of the locking-dog secures lever 68 against shift'by An extension 97 of locking-dog 72 is engaged by stud 47 of the striker, while the striker is in shifted position, and thereby the locking-dog will be held in raised position to retain arm87 out of the path of coin-rest operating-lever 68, while the striker-lever is in shifted position, and said parts serve to hold the locking-mechanism so the refunding means is nperable until the releasing mech is actuated to restore switch 38 to normal position. Locking-dog 72 is provided with a lug 88 positioned to be engaged by latch 44. Such means provide mechanism whereby the releasing mechanism can shift the locking dog to render the refunding means operable by the depositor independently of the mechanism for holding striker and switch in shifted position.

When switch arm 38 and striker 39- have been shifted the holding mechanism will be in position seen in Fig. 6 of the drawings. And, if the telephone-line is operative, the line-signal at central office will be actuated.

rod 64 when the dog is in normal position.

anism under control of the central operator ated, the production of an audible sign tion.

exible support 91.

vice for pro After having ascertained that the circuit whereover conversation is conducted is operative and establishing communication with the substation, the operator will actuate a releasing mechanism, which causes the switch-arm, the striker, the latch,and the locking-dog, to be restored to normal posi- If, however, the telephonic communication cannot be established with central 'oflice, so the line-signalcannot be actuated, the depositor can withdraw the deposited coin, by pulling rod 64. The parts being then inshifted position, (see Fig. 6) forward shift of rod 64 will cause stud 75 to enga e lever 68, which will shift coin-rest 52 bac wardly and allow the deposited coin to gravitate from the distributer mechanism, through exit 57 into receiver 58. Manifestly, therefore, the depositor can withdraw a deposited coin if no response is received from central office. Such withdrawal of a deposited coin, will also cause stud 75 to engage arm 89, and lift the latch. Such shift of the latch will free the strikerv and permit the striker and switch-arm to be restored to normal position. When rod 64 is released the lOCklH -dog will descend into normal position, an secure lever 68 against forward shift.

When the coin-refunding means is oplerprevented by a mufiier 9O sustained b a A finger 92 secure to rod 64 engages, the muffler-support 91, and

holds the muflier out of contact with gong 42,

while the rod is in normal position, and when the rod and finger are drawn forwardly to withdraw a coin, the mufiier will promptly engage the ong and prevent the roduction of an audib esignal by the striker. uch means dprevent the actuation of the deucing the confirmatory audible signal, unless the coin which has caused the sends current over the line to operate the reactuation of'the line-signal is allowed to re-.

main in the ap aratus. If the audible signal is not hear when the central operator leasin mechanism, the operator will know that t e deposited coin has been-withdrawn.

The releasing-mechanismfor shifting locking-dog 72 into and out of position to secure the distributer-mechanism against manual operation, and for releasing the striker to ac tuate ong 42, comprises a polarized relay 80 provi ed with electro-ma nets 81, an armature 82, and a releasing ever 83 pivotally sustained as at 84 in plate 78, and having an arm arranged in the path of travel of one terminal of armature 8.2, and'an arm 85 connected by stud 93, and slot 94 to-latch 44.

Relay is'secured to the frame in any convenient manner. Electro-magnets 81 are interposed in the si alcircuit, and the magnet is Wound in suc I manner that the terminal of armature 82 adjacent the releasing current will not shift the armature.

lever 83will be attracted when current of one sign e. g., positive, is impressed into the sig-' nal-circuit. The armature is normally positioned by a suitable spring on the releasinglever, so the end adj acentthe releasing lever is against the magnet. Therefore positive When current of the other sign, t. e.', negative, is im ressed into the signal-circuit by the centra operator, the opposite end of the armature willbe attracted by the polarized relay,

and the end adjacent releasing-lever 83, will l be repelled and engage releasing lever 83.

When striker 39, switch-arm 38, and dog 72 are in shifted position,- and the releasing mechanism is operated, the releasing-lever willlift latch 44 out of engagement with stud 47 of the striker 39, thus releasing the striker,

and switch-arm, and withdrawing stud 47 from engagement with arm 79 of the lockingdog, so the dog will be restored to normal position and will secure lever 68 against move ment.

When the releasing-mechanism is actuated by the central operator while switch 38 and locking-dog 72 are in normal position, releasing lever 83 will lift latch 44, which will then engage lug 88 of the dog and lift the dog so the refunding-means can be operated. Negative current is im ressedinto the circuit, when the operator as established communication with the calling substation, and had ascertained that the telephone-line is operative. When such current is sent over the line, and the striker and switch-arm are in shifted position, the releasing-mechanism will thus cause the release of the switch-arm to break the signal-circuit, the release of striker 39 to cause the roduction of a confirmatory audible signa, and release of the lockingdog,.which secures the coin-rest 52,

,a spring 112, and with an arm 110 having a terminal 111 of insulating material. The forward movement of lever 107 is restricted by a stop 141. Terminal 111 of the switch lever 107 is arranged to en age contact 104, and shift said contact agalnst contactv 100, when switch-lever 107 is shifted out of nor- .mal position, and a block 112, of insulating material, and secured to contact 104, straddles contact 100, (see Fig. 9) is extended beneath contact 41, and simultaneously separates the normally engaged contacts 41 and 100, and breaks the circuit over which conversation is conducted when switch-lever 107 is shifted. A resistance coil- 106is conveniently secured to the frame, and is included in the circuit controlled by contact 104. A terminal block 140 provided with binding- .posts in suitable number, is secured in case for convenience inconnecting the electrical conductors of the apparatus with the telephone-line.

Referring more particularly to Fig. 1, 113 and 114 are branches of a telephone-line connecting a substation and a central exchange, and terminate respectively in line-springs 115 and 116 of a spring-jack of usua construction. A line-relay 119 is associated with each subscribers line, and is included in a signal circuit comprising branch 114 of the telephone-line, switch 120, conductor 121, extending to battery 122, and conductor 123 grounded at 124. When energized, linerelay 119 causes actuation of visual signal (such as a lamp) 125 ina local circuit. A cut-out relay 126 included in a circuit which extends from ground at 124-and by conductor-127 to the test-ring, excludes the line-relay from the signal-circuit, when the operator inserts a plug into the spring-jack.

A cord-circuit and usual associated parts are provided at central station, and include plugs 128, 129, centralized battery 131, supervisory signals 132, grounded conductor 133, ringing key 134 and alternating-current generator 135 connected together in manner well understoodin the art. Current of the negative sign for the operation of the releasing mechanism may be impressed into the line from a suitable generator or other source of potential 136, normally excluded from the cord-circuit at switch 137.

At substation, branch 114 terminates at contact 100 of the-toll-a paratus, and branch 113 connects with a te ephone-set 138 comprising the usual parts and including a transmitter, induction-coil, signal-bell, and switch hook, connected together as shown and as well understood in the art. A conductor 139 extends from a terminal adjacent the switchhook' to contact 41 of. the tollap aratus. Contacts 100 and 41 retain the te ephoneline normally closed at the toll-iapparatus, to render the telephone-line operative for communication between the exchange and the substation. Contact.104 of the toll-apparatus'is arranged beneath and normally out of contact with terminal 100, of the telephoneline, and is connected with conductor 105 havin resistance-coil 106 (say 500 ohms) in- Cl1l(l6( therein, and which is connected with a conductor 101. Contact 40, which is shifted by the coin-controlled switch-arm, is connccted by conductor 101 with magnets 81 of relay 80, and by conductor 102 with ground as at 103. (ontact 40 controls the signalcircuit and when shifted, will close the signal circuit to cause the actuation of the line-signal. Current impressed into the signal-circuit to actuate the line-relay is of that sign which will not shift armature 82 of the-releasingmechanism from its normal position. Armature 82 is normally held with the side adjacent the releasing lever in position nearest its magnet, and therefore when the signalcircuit (wherein polarized relay is in- 75 eluded) is closed by the shift of switch-arm 38 and the line signal is actuated, armature 82 and releasing lever-83 will remain in normal position, while striker 39 and switch-arm 38 Wlll remain in shifted position.

Coil 106 prevents operation of the releasing-mechanism by alternating current used to actuate the call signal at substation. Rod 64 has a limited initial play before engaging the locking-dog, and during the initial art of 85 forward movement of said rod, switc -lever 107 will shift contacts 104 and 41, and force contact 104 against contact 100, and simul taneously disenga e contacts 100 and 41 to exclude the 1381815101116 set from the line. .90 When negative current is impressed into the line at central office, and rod 64 is shifted, such current can pass from branch 114, by contacts 100, 104, conductor 105, through resistance 106, magnets 81, and thence by con ductor 102 to ground. Negative current used to operate the releasing-mechanism is of suflicient y high potential to pass through coil 106 and energize relay 80.

The operation of the apparatus will be as follows: A patron desiring service will deposit a coin into the carrier and actuate the carrier to de osit the coin or token into the distributer-c ute. During such operation, a previously deposited coin (if any) will be displaced into thecoin-compartment, striker 39 will be set in position to produce an audible signal and switch-armwvill be shifted and held to close the normally open signal-circuit at contacts 40, 41. Latch 44 will then re- 110 tain the striker and switch-arm in shifted position, and stud. 47 will hold locking-dog 72 out of the path of lever 68, so the distributermechanism can be actuated by the depositor to withdraw a coin.

If the telephone-line is inoperative so central exchange cannot be called, the depositor will pull rod 64 and cause stud 75 to shift lever 68 and coin-rest 52 so the deposited coin will be refunded. During such manual withdrawal of a deposited coin, locking-dog 72, striker 39, switch-arm 38, will'be restored to normal position, and muffler 90 will engage gong 42 and prevent production of an airdlble signal. I

If the signal-circuit is operative, current will pass from ground" at 124, through conductor 123, battery 122, conductor 121, linerelay 11'9, switch 120, branch 114 of the line, contacts 100, 41, 40, at the substation, con- 130 Negative current will then pass from ground 1 ductor 101, magnets 81 of relay 80, and con ductor 102 to ground 1,03. The signal-circuit will then be closed, and the line-signal 125 will be actuated, but such current, being of the positive sign, will not operate the releasing mechanism.

Central operator in response to the line signal will insert plug 129 into the springjack of the switch-board, establish telephonic connection with substation in usual manner, and inquire of the depositor what connection is desired. If no response is received from substation, central operator will know that the line is inoperative, and will withdraw plug 129 from the spring-jack and leave the toll apparatus in position assumed after deposit of a coin. The depositor can then withdraw the coin.

Upon being informed of the connection desired, the operator will know that the telephone system is operative, and will shift switch 137 to cause current of the negative sign to pass over the line and effect the operation of the releasing-mechanism. Such current will then. pass from ground 103, through conductor 102, magnets 81 of relay 80, conductor 101 contacts 40, 41, 100, conductor 114, respectively, and through linespring 116, plug 129, switch 137, to generator 136 and thence to ground. Armature 82 will then be shifted to operate releasing-lever 83, and lift latch 44. Thereupon the striker will be released from latch 44, and actuate gon 42 to produce a confirmatory laudible si na switch-arm 38 will be restored to norma position to break the signalcircuit at contacts 40, 41, and the locking-dog will be restored to securelever 68 whereby the coin-rest is shifted to refund the coin, against movement. The audible signal notifies the central operator that the deposited coin has remained in the toll-apparatus. The operator will then ascertain if the desired connection can be made, and establish the desired communication if such can be done. If the desired service is given, no further operation by the operator is necessaryas the deposited coin, is no longer under control of the depositor and will remain in the distributer-chute until displaced into the coin-compartment during the succeeding deposit of a coin;

If the desired connection cannot be given, e. 9., if the line called for, is busy, the operator will inform depositor orally, or by busy signal, as'well understood in the art, that the desired service cannot be given, and again impress current of negative sign into the line by switch 137. The depositor will then pull rod 64 to effect the withdrawal of the deposited coin. forwardshift of rod 64, switch-lever 107 will be shifted, the talking circuit will be broken at contacts 41, 100, and contact 104 will be lifted into engagement with contact 100.

During the initial.

shift of rod 64, the lever will be vibrated to' shift coin-rest 52, and permit the coin to gravitate into receiver 58. During such shift of rod 64, the telephone-line which is normally closed at contacts 41, 100, is opened and current is grounded through resistancecoil 106.

Upon completion of circuit for passage of negative current, supervisory signal 132 will notify the central operator of the refunding-operation at the substation. Upon separation of contacts 100, 41 of the toll-apparatus, the telephone-line is broken and passage of current from battery 131 and the conductor connecting said batteryand the sleeve of plug 129 is discontinued, and the supervisory relay breaks the shunt loop around the supervisory-signal, so current will pass through said signal and over a circuit as follows, viz: ground 133, battery 131, conductor '140 (wherein supervisory-signal 132 is included), body of plug 129, test-ring 141, conductors 127, 123, and ground 124. Thus the supervisory-signal notifies the exchange operator of the refund of the coin, whereupon the operator makes disconnection of the cord-loop from the sw'itch board.

Resistance-coil 106 prevents actuation of the releasing-mechanism by the alternating current employedto actuate the call signal, should attem t be made to.withdraw a coin in the distri uter chute, while alternating current is passing over the line, because shift of rod 64 will promptly open the line at con tacts 41, 100, and ground the current through conductor 105, and resistance-coil 106.

Manifestly, the invention provides tollapparatus which can be associated with party line telephones. The invention possesses several important advantages. The toll-apparatus is simple in operation and construction. If the service desired by a patron can be given, no operation upon the part of the central 0 )crator is. n(' cessary to displace the de ositetl cause uring the transit of the next deposited coin to the distributer-mcchanisin, the )I'eviously deposited coin will be dis )laced into the coin-compartment. The mechanism for controlling the actuation of the line signal is coin controlled and positivel shifted by a coin. The confirmatory audi )le signal notities the operator that the deposited coin has not been withdrawn, and that the signal cir coin into the coin-drawer, be-

- tor.

sscps 1 is inoperative, the coin can be withdrawnby the depositor, and furthermore, if the circuit over which conversation passes is inoperative, the operator will become aware of the defect, and refrain from placing the coin beyond control of the depositor. The refunding mechanism while manually o erated, is so constructed that the deposite coin cannot be.withdrawn unbeknown to the opera- The toll-apparatus can be associated with arty line telephones in which a grount ed call signal is used, and the opera-- non of the releasing-mechanism which controls the manually operated distributermechanism cannot he effected by alternating current used to actuate the call signal. The distributer mechanism is normally locked against manual shift. The contacts and conductors of the toll-apparatus ar'enormally disconnected from the telephone-line, and do not interfere with the assage of current over the circuit over whic conversation is conducted.

The term coin as used herein is to be understood to include not only coins, but all toll representing tokens, which may be used in lieu thereof.

Obviously, the invention is not to be understood as restricted to the construction and arrangement shown and described, but maybe varied within wide limits without departing from the spirit of the invention, and furthermore, the novel features may be em ployed severally without adoption in entirety.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, isz' 1. In a toll-apparatus, the combination with coin-refundmg-means of shifting-means operated by the depositor, for operating the refunding-means, and means whereby the shift of the refunding-means by the shiftingmeans can be controlled.

2. In a toll-telephone-system, the combination with a telephone-line, of a toll-a paratus comprising coin-refunding-means, s 1fting-means operable by the depositor, for operating the refunding-means, and means whereby shift of the-refundin .-means by the shifting-means can be control, ed'by the exchange-operator.

3. ln a toll-apparatus, the combination with c )in-refundingmeans, of shifting-means operated by the depositor, for operating the refunding-1neans, and means whereby the shift of the refunding-means by the shifting means can be controlled, said refundingmeans being normally inoperative.

4. In a tr)ll-telephone-system, the combination with a telephone-line, of a toll-ap aratus com prising roin-refu nding-me ans, s 11ft- -ing means, operated by the depositor, for operating the refunding-means, and means whereby the operation of the refundingmeans by the shifting-means can be controlled by the exchange-operator, said refunding-means being normally inoperative.

5. In a toll-apparatus, the combination with coinrefundingmeans, of shifting-means for operating said refunding-means, and means rendering the refunding-means shiftable by the shifting-means whena coin is deposited.

6. In a toll-telephone-system, the combination with a telephone-line, of a toll-apparatus comprising coin-refunding-means, of shifting-means for operating said refundin means, said refunding-means being normalfy inoperative, means rendering the refundingmeans operative by the shifting-means, when a coin is deposited, and means whereby the exchange operator can control the operation of the refunding-means.

7. In a toll-apparatus, the combination with coin-refunding-means, of shifting-me ans for operating said refunding-means, said refunding-means being normally inoperative,

means rendering the refunding-means operative by the shifting-means when a coin is deposited, and means rendering the refundingmeans inoperative when a coin is refunded.

8. In a toll-telephone-system, the combination with a telephone-line, of a toll-apparatus comprising coimrefunding-means, of shifting-means for operating said refundingmeans, said refunding-means being normally inoperative, means rendering the refunding means operative by the shifting-means when a coin is deposited, means'rendering the refunding-means inoperative when a coin is refunded, and means whereby the-exchangeoperator can control the operation of the refunding-means.

9. In a toll-telephone-syste'm, the combination with a telephone-line, of a toll-a paratus comprising coinrefundingmeans, s 1fting-means operated by the depositor for operating the refunding-means, and means whereby the exchange operator can prevent the shift of the. refunding-means by the shifting-means.

10. In a toll-apparatus, the combination with coin-refundingmeans, of coimshiftingmans operated by the depositor, for operating the refundingmeans, meanspreventing shift of the refunding-means by the shiftingn.eans, and means controlling said preventing-means.

11. In a toll-telephone-system, the combination with a telephone-line, of a toll-a aratus comprising coin-refunding-means, s 1fting-means operated by the depositor, for operating the refunding-irieans, means preventing the operation of the refunding-means by the shifting-means, and means whereby the exchange-operator can control the operation of the preventing-means.

12. In a toll-a paratus for telephones, the combination wit coin-refunding-means, operated by the depositor, of means whereby a coin can be displaced into a receptacle, means operating said. displacing means during each deposition of a coin, to displace a previously deposited coin, and means for controlling the actuation of the refunding-means.

13. In a toll-telephone-system, the combination with a telephone-line, of a toll-apparatus comprising coin-refunding-means operated by the depositor, means whereby a coin can be displaced into a receptacle, means operating said displacing means during each deposition of a com to displace a reviously deposited coin, and means where the exchange-operator can control actuation of the refunding-means.

14. In a toll-a paratus for telephones, the combination wit coin-refunding-means operated by the depositor, of means whereby a coin can be dis laced into a receptacle, means operatin sai displacin -means during the transit o a coin to said g displace a previously deposited coin.

15. In a toll-telephone-system, the combination with a telephone-line, of a toll-apparatus comprising coin-refunding-means operated by the depositor, of means whereby a coin can be dis laced into a receptacle, means operatin said displacin means during the transit o a coin to said isplacing-means, to

displace a previously deposited coin, and means whereby the exchange-o erator can control the actuation of the refun ing-means. 16. In a toll-a paratus for telephones, the combination wit coin-refunding-means, of shifting-means foroperating the refundingmeans, and means securin the refundingmeansagainst shift by-the s ifting-means.

17. In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus comprising coin-refunding-means, of

shifting-means operated by the depositor,

for operating the refunding-means, means securing the refunding-means against opera tion by the shifting-means, and means w ereby the exchange-operator can release the refunding-means to render the refundingmeans operative by the shifting-means.

18. In a toll-apparatus the combination with coin-refundin -means, means normally securing the refun ing-means against operation to refund a coin, and means whereby the securing-means will be released to render the refundmg-means shiftable-by the shifting-means.

19. Ina toll-telephoneesystem, the combination with a telephone-line of a 'toll-a paratus comprising coin-refunding-means, s 1fting-means operated by the depositor for operating the refundin means, means normally securing the re unding-means against operation, means whereby) the securingmeans will be operative y the shiftingisplacing-means, to

having manually-operated refunding mechanism, a switch board circuit including a source of current, a connecting switch for connecting the same to the line, and an electro-magnetic lock for the refunding mech anism responsive to the current applied by said connection switch.

2 1. The combination with a telephone line,

of a toll-apparatus having a temporary coin receiver, a return chute eading therefrom, manually operated refund mecharnsm for transferring the coin from the temporary receiver to' said return chute, blocking mechanism adapted to prevent the operation of the refund mechanism, an electric ma net controlling the blocking mechanism, winding connection with the telephone line, a source of current, and means for connectin the same with the line, to actuate the said magnet.

22. 'In a toll-tele hone system, the combination with a telep lone-line, of a toll-apparatus comprising coin refunding means, a lock for securing said refunding means against actuation," and means whereby the central operator can control the operation of the refundin means. j

23. n a toll-apparatus, the combination with coin-refunding-means, of shifting-means operated by the depositor, for operating the refunding-means and a lockwhereby the refunding-means can be secured against operation by the de ositor.

24. In a to -tele hone system, the combination with a telep one-line of coin-refunding means, means whereby the de ositor can shift the refunding-means, a 100 whereby the refunding-means will be secured against actuation by the depositor, and means whereby the central operator can cause the shift of said lock.

nation with a tele one line, of coin-refundmg means, a 100 whereby the refundinghaving a means can be secured against actuation by the depositor to refund a coin, and means whereby the central operator can cause the shift of said lock to permit refund.

26. In a toll-apparatus the combination with coin refunding means operable by the de ositor, of locking-means for securin said re unding means against actuation'by t e depositor, and means whereby the refundingmeans will be rendered operative, when a coin has been deposited.

27 In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus con'iprising coin refunding means operable by the depositor, locking-means for securing the refunding means against actuation by the depositor to refund a coin, means ,shift of said locking-means to release said refunding means, and means operated by the depositor for operating the refunding means.

29. In a toll-apparatus for telephones the combination with coin refunding means, of a locking-means for securing the refunding means against actuation to refund a coin, means for causing the shift of said locking means to release said refunding means, means whereby said refunding means can be actuated by the depositor to refund a coin, and means which will cause said lockingmeans to be restored to position to secure the refunding means after such refunding.

30. In a toll-apparatus for telephones, the combination of coin refunding means, locking-means for securing the refunding means against actuation to refund a coin, means for causing the shift of said locking-means to release the refunding means, and means for holding said locking-means inshifted position.

31. In a toll-apparatus for telephones, the combination with com refunding means, of a lock for securing the refunding means against actuation to refund a coin, means'for causing said lock to be shifted to release said refunding means, said means comprisinga relay, and means whereby the refunding means can be acutated by the depositor to refund a coin.

32. In a toll-apparatus for telephones, the

combination of coin refunding means, locking-means for securing the refunding means against actuation, means for causing the shift of said locking-means to release said refunding means, means for holding said locking-means in released position, and means whereby said refunding means maybe actu ated by the depositor.

In a toll-apparatus for telephones, the combination with coin refunding means, of locking-means for securing the refunding means against actuation, releasing mechanism for causing the shift of said locking- Ineans, means for causing the locking-mechanism to be held .in shifted'position, and

means whereby the refunding means can be actuated by the depositor.

34. In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus comprising coin refunding means, of lockingnneans for securing the coin refunding means against actuation, releasing-mechanism for causing the shift of said lockingmeans, means whereby the central 0 erator can cause the locking-means to be lield in shifted position, and means whereby the refunding means can be actuated by the depositor.

35. Ina toll-apparatus for telephones, the combination with coin refunding means, of locking-means for securing the refunding means against actuation to refund a coin, means for causing said locking-means to release said refunding means, means for retaining said locking-means in released position, means whereby said refunding means can be actuated by the depositor and means which will cause said locking means to be restored to position to secure the refunding means after said refunding.

36. In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus comprising coin refunding means, lockingemeans for securing said refunding means against actuation to refund a coin, means for holding said locking means in position to permit actuation of the refunding means to refund'a coin, releasing mechanism whereby the central operator can cause the lockingmeans to release the refunding means, means which will cause said locking-means to be restored to position to secure the refunding means after actuation of said mechanism to refund a coin, and means whereby said refunding means can be actuated by the depositorl 37. In a toll-a paratus for telephones, the combination wit locking-means for securing the refunding means against 1 actuation, mechanism for holding said locking-means in position to release the refunding means and means whereby said locking-ineans can be shifted inde pendently of said mechanism to release said refunding means. I

38. In a toll-apparatus for telephones, the combination with coin refunding-means, locking-means for securing said refunding means against actuation to refund a coin, mechanism for holding said locking-means in position to release therefunding means, means whereby said locking-means canbe shifted independently of the holding-mechanism to release said refunding means, said shifting means being under control of the central operator, and means whereby the refunding means can be actuated by the depositor.

39. In a toll-telephone system, the combination with a telephone line, and a signal-circuit includin a line-signal at central office, of a coin-contro led switch at the substation, for controlling passage of current over said circuit, coin refunding means, means whereby I being free to permit withdrawal of a' coin the refunding means can be actuated byi'the depositor, and means whereby the refunding means can be secured to prevent refund of a coin,

40. In a toll-telephone system, the combination'with a telephone-line, and a signalcircuit including a line-signal at central office, of a coin-controlled switch at the substation for controlling passage of current over said circuit, com refunding means, means whereby the refunding means can be actuated by the depositor, and means whereby the central operator can cause the refunding means to be secured against actuation by said actuating means.

41. In a toll-telephone system, the combination with a telephone-line, and a signal circuit including a line-signal at the central ofiice, of a coin-controlled switch at the substation for controlling passage of current over said circuit, com refunding means, means whereby the refunding-means can be operated by the depositor, the refundingmeans being operative by said means when said switch has been shifted to cause the actuation of the line-signal, and'means whereby operation of the refunding-means by the operating-means can be prevented.

42. In a toll-tele hone system, the combination with a telepfi cuit including a line-signal at the central ofiice, of a coin-controlled switch at the substation for controlling passage of current over said circuit, coin refunding-means,

- means whereby said refunding-means may station for controlling passage of current over said circuit, coin-refunding means, means whereby said refunding-means may be actuated by the depositor, said refundingmeans being free to be actuated by said ac tuating-means whensaid switch has been shifted to cause actuation of the line-signal, and normally secured against actuation by the depositor, and means whereby the central operator can secure the refunding-means against actuation by the depositor';

44. In a toll-apparatus, the combination with coin refunding means, of a coin-controlled switch, lockmg-mechanism for securing the refunding meansagainst actuation by the depositor, means for holding said switch in shifted osition to cause the actuation of the line-slgnal,- the refunding means one line and-a signal-cir when a coin while said switch is held in position to actuate the line-signal, and releasing-mechan-' -ism for said switch.

45. In a toll-telephone system, the combination with a telephone-line and a signalagainstiactuation by the depositor, means for holding said switch in osition to cause actuation of the line-signa said refunding means being free to ermit withdrawal of a coin while said switcll is held in position to actuate the line-signal, and releasing-mechanism whereby the central 0 erator can cause the switch to be restore to. normal position. 1

46. In a toll-tele hone system, the combination with a telephone-line, a signal-circuit including a line-signal at central office, of a coin-controlled switch at the substation for controlling passa e of current over said circuit means for he ding said switch in shifted position, coin refunding means, means whereby said refunding means may be actuated by the depositor to refund" a coin, means whereby said refunding means will be secured to revent actuation thereof, means whereby said means for securing the distributor will be held in position to permit actuation of the refunding means while the switch is in shifted position, and means whereby the'central operator can simultaneously release said switch holding means, and cause the securing means to secure the refunding means.

47. In a toll-telephone system, the combination with a telephone-line, and a signal-circuit including a line-signal at central office, of a coin-controlled switch at the sub-station for-controlling passa e of current over said circuit, means for holding said switch in shifted position, coin refunding-means, means whereby said refunding-means may be actuated by the depositor to refund a coin, means whereby said refunding-means will be secured to prevent actuation thereof, means whereby said switch-holding means will be shifted to cause the release of said switch, and means whereby the securing-means will be shifted to secure the refunding-means when the switch is released.

.48. In a toll-telephone system, the combination with a telephone-line and a signalcircuit including a line-signal at central office, of a coin-controlled switch at the substation for controlling passage of current over said circuit, coin-refunding-means, shiftingmeans operated by the 'depositor for operating the refundingmieans, said refundingmeans being 0 erative by the shiftingqneans as been deposited, and independently of the signal-circuit, so ino erativeness of the line will not prevent re unding of a coin, and means for controlling the operation of the refunding-means when the signal-circuit is 0 erative. v

49. In a toll-te ephone system, the combination with a'telephone-line, and a signalcircuit including a hue-signal at central oflice, of a coin-controlled switch at the substation for controlling passage of current oversaid circuit, a latch for holding said switch in shifted position, coin refunding means, means whereby the refunding means can be actuated by the de ositor to refund a coin, means whereby sai refunding means will be secured to prevent actuation thereof, means whereby said latch will be shifted to release said switch and means whereby the securing means will be shifted to cause the refunding means to be secured when the switch is released.

50. In a toll-tele hone system, the combination with atelep one-line,' a signal-circuit including a line-signal at central office, of a coin-controlled switch at the'sub-station for controlling passage of current over said circuit, a latch for holding said switch inshifted position, coin refunding means, means wherey said refunding means can be actuated by the depositor to refund a coin, a locking-dog for securing the refunding means against actuation, means whereby said latch will be shifted to release the switch, and means which will cause the shift of said dog to secure the refunding means when said switch is released.

51. In a toll-telephone system, the combination with a telephone line, and a signalcircuit including a line-signal at central oflice, of a coin-controlled switch at the substation for controlling passage of current over said circuit, a latch for holding said switch in shifted position, coin refunding means, means whereby the refunding means can be actuated by the depositor to refund a coin, means whereby the refunding means will be secured to revent actuation thereof,

means whereby t e central operator can cause the simultaneous shift of said latch to release said switch and the shift of the securing means to cause the refunding means to be secured. I

52. In a toll-apparatus for tele hones,the combination with a coin-controller. switch, of coin shifting means, coin refundin means, a locking-mechanism, means for hdlding said locking-mechanism and said switch in shifted position, and releasing mechanism for the switch and the locking-mechanism.

58. In a toll-apparatus for tele bones, the combination with a coin-control ed switch, of coin shifting means, coin refunding means, means for holding said switch and lockingmechanism in shifted position, and releasingmechanism for the switch and the locking- 'of said device is shifted .to actuate sai mechanism, said releasing-mechanism serving also to release the locking-mechanism inde pendently of the switch.

54. In a toll-apparatus for tele bones, the

combination with a coin-contro led device for producing an audible signal, said device comprising a sound producing body and an actuating part, means for shifting one of the parts of the said device to produce a signal, and means whereby the production of a signal can be prevented when one of the parts of said device is shifted to actuate said device.

55. In a toll-a paratus for tele hones, the combination wit a coin-contro led device for producing an audible signal, said device comprising a sound producing body and an actuating part, means for shifting one of the parts of the said device to produce a signal, and a muffler whereby the production of a signal can be prevented when one of the asts e vice.

56. In a toll-apparatus for telephones, the

combination with coin refunding means of a device for producing an audible signal, said device comprising a sound producing body and a striker, means whereby said mechanism -may be actuated by the depositor, means for causing engagement of the parts of said device, and means for preventing the production of a signal when the refunding means is operated.

57. In a toll-apparatus for telephones, the combination with coin refunding means,of a

.device for producing an audible signal, said device comprising a sound producing body and a striker, means whereby said mechanism may be actuated by the depositor, means for causing engagement of theparts of said device, and a mufller for preventing the production of a signal when the refunding means is actuated.

58. In a toll-telephone-system, the combination with a telephone-line, of an electriccircuit including a coin-controlled-switch at at the substation, having:a polarized relay included therein, said relay being responsive to current employed in causing actuation of the line-signal, and a toll-a paratus compris in reverse direction is impressed into the circuit, said part remaining inoperative when the line-signal-current passes through said relay, and a source of potential for said circult.

59. In a toll-telephone-system, the combination with a telephone-line, of an electriccircuit including a coin-controlled-switch at the substation, a line-signal a grounded conductor atthe substation and havin a polarized relay included therein, said re ay being responsive to the current employed for causing actuation of the line-signal, and a tollapparatus comprising a coindistributer-' the substation, a line-signal and a conductor ing a part shifted by said re ay, when current mechanism, controlling means for said mechanism and shifted by said relay when current in reverse direction is impressed into the circuit, the controlling means remaining unshifted by said relay, when linesignal-current is impressed into the circuit, and a source of potential for said circuit.

60. In a toll-telephone system, the com- .bination with a telephone-line of an electricalcircuit a normally open switch included insaid circuit and located at the sub-station, and a conductor connected with said switch, of a toll-ap aratus comprising a coin-distributer-mec anism, a controlling mechanism including a relay included in said conductor, a normally closed switch included in the tele hone-line, and means whereby said normal y closed switch willbe opened to exclude the telephone when "said normally open switch is shifted to cause actuation of said relay. Y

62. In a toll-telephone system, the combination with a telephone-line, an electricalcircuit, a normally open switch included in said circuit, and located at the sub-station and a conductor connected with said switch, of a toll-ap aratus comprising a coin-distributer-mec anism which may be actuated by the depositor, a controlling-mechanism including a relay includedin said conductor, a normally closed switch included in the telephone-line, means whereby said normally open switch will be shifted when the distributermechanism is actuated by the depositor, and means whereby said normally closed switch will be shifted to exclude the telephone when said normally open switch is shifted.

63. In a toll-telephone system, the combination with a telephone-l ne, of a toll-apparatus comprising coin refunding means, operating means for the refundingmeans and shifted by the depositor and a controllingmechanism includlng a relay, an electrical circuit wherein said relay is included, a normally open switch at the subscriber's station, and for controlling passage of current over said circuit, and through said relay, a source of potential for said circuit, a switch at central station under control of the central operator and means whereby the depositor will shift said normally 0 en switch to cause actuation of said relay w en the operating means is shifted by the depositor.

tor, and means whereby said normally open switch will be shiftedto cause current to pass through said relay when the operating means is shifted by the depositor to-refund a coin.

65. In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus at the sub-station a signal-circuit in cluding a line-signal at central office, a normally open coin-controlled switch included in said circuit, a grounded conductor con nected with said switch, a polarized relay included in said conductor, a source of potential for causing actuation of the line-signal when said switch is closed, mechanism shifted by said relay, said relay being responsive to line-signal current and permitting said mechanism to remain in normal position when currentis passin over said circuit to cause actuation of the inc-signal and means whereby the central operator can impress current in reverse direction-into said circuit to actuate ism.

66 In a toll-telephone-system, the combination with a telephone-line, of a toll-apparatus at the sub-station, and comprising a coin-distributer-mechanism which canbe acsaid relay and shift said mechantuated by the depositor, mechanism for controlling the actuation of the. distributermechanism by the depositor, a signal-circuit including a line-signal at central-office, a normally open coin-controlled switch included in said circuit, a olarized relay included in a grounded (301K uctor leadin from said switch, said relay serving to shift said controlling mechanism, and being constructed to permit said mechanism to re-' main in normal position when current is passing over the circuit to cause actuation'of the line-signal, means whereby the central operator can impress current in reverse direction into said circuit to actuate said relay and cause the shift of said controlling-mechanism, and a source of potential for said circuit.

67. In a toll-telephone system, the combination with a telephone-line, of a toll-apparatus at the sub-station, and comprising a,

coin-distributer-mechanism which can be actuated by the depositor, mechanism for controlling the actuation of the distributermechanism b the depositor, a signal-circuit including a inc-signal at central ofiice, a

normally open coin-controlled switch, in-

cluded in said circuit means for holding said switch inshifted positionQa polarized relay included in a grounded conductor leading a from said switch, said relay serving to shift said controlling mechanism and holdin 4 means, and being constructed to permit said mechanism to remain in normal position when current is passing over the'circuit' to whereby the central operator can impress current in reverse direction into said circuit, to actuate .said relay, and cause the shift of said controlling-mechanism, and the release of said switch, and a source of potential for 68. In a toll-telephone system, thetcom bination with a tele hone-line, and' a s'i alcircuit including a. e-signal at'c'entr" office, of a toll-ap aratus comprising-a coindistributermec anism, a coin controlled 7 switch, a switch which'can'be shifted b s the depositor, a relay,--both of said switches eing' connected with a conductor wherein said'ria-E 1 lay 1s lncluded and a sourceof potential for said circuit.

69. In a toll-telephone system, the combination with a telephone-line and a signalcircuit including. a line-signal at the central ofiice of a toll-a paratus comprising a coin distributermec anism, a norma y open coin-controlled, switch, a controlling mechanism comprisin a relay included-in a conductor'connecte with said switch, a switch controlled by the depositor and whereby ourrent can be passed throughsaid relay when said coin-controlled switch-is open, and 'a' source of potential forwsaid circult.

bination with a telephone-line and a signalcircuit including a hne-signalat the central ofiice, of a toll-apparatus compris' a coindistributer-mechanism, Ia norm'a y" open coin-controlled switch, a controlling-mech: anismcomprisin a relay-included in a conrent can be-passed through said relay'when said coin-controlled switch is open, means for holding said coin-controlled switch inclosed ,position means which will cause said holding means to release the coin-controlled switch when said relay is actuated'means 'whereb tor, and a source of potential for said circuit.

71. In a toll-telephone "system, the combination with a telephone-line, of a toll-ap:

paratus comprising coin refunding means, operating means for said refunding means and operated by the depositor, a relay, a norcause actuation of the line-signal, means 70. In a toll-telephonesystem, the comductor connecte with saidtswitch, aswitch controlled by the depositor and whereby 'cur-' said switch may be released by the depos1- .mally open switch, shifted by the depositor when the refunding means is to be operated, said switch serving to cause passageof current through said relay, a switch whereby the central operator can impress current into said circuit, and a signal at the'central office, andwhich will indicate to the centraloperator when= the'switch at the sub-station is,

shifted to close said circuit.

7 2. In a toll-telephone system, thefcombination with a telephone-line, of a. toll-a paratus comprising a coin-distributer-mec anism, means whereby said mechanism can be actuated by the 'depositor, controllin mechanism comprising a relay, a normal y open switch, the shift whereof is caused by said means, said switch allowing assage of current through said relay, a switc whereby the central operator can impress current into stem, the comlowing flow of current t oughf said relay, 1

and. arranged to connect with the telephone-- line, and means for preventing actuation of said relay when the switch which is shiftable by the depositor is shifted by the depositor,

-whenalternating-current is impressed into the telephonetol actuate" the call-signal at the sub -stationi,l-* 74; In a toll l phone system, the combination withfja tee hone-line'including a normally closed switc at the sub-station, of

a toll-aplparatiis-"coniprising a coindistrib utar-me anism, means ,-'whereby said mechanism may bei 'actuatedz by the 'depositor, a controlling-mechanismincluding a relay, a normally'open switch which is shiftableby the depositor, a grounded conductor con-- nected with said normally open switch, a re' sistance included in .said conductor. and for preventing actuation of said relay by alternatnig current employed to actuate the call signal, and .means whereby the normally closed switch will be shifted to 0 en the'line,,,

when the normally open switchhs shifted by the depositor.

' EDWARD P. BAIRD. In presence of- I FRED GERLACH,

EMMA GEBLAOH. 

